A series of underwater photos snapped during the synchronized swimming duet finals at the Rio Olympics gives an intimate glimpse at the unseen parts of swimmers' routines.

The USA's synchronized swimming team is pulling out all the stops as it looks to medal in artistic swimming at the 2024 ...

From a synchronized ballet of white-tip reef sharks to the moment a male cardinal fish releases a swarm of freshly-hatched babies from its mouth, the winning underwater photos of the Ocean Art ...